European governments aim to raise labour supply, cut unemployment and, at the same time, maintain social cohesion. Yet, economists have stressed the tradeoff between these objectives. This paper reviews the key policy insights from optimal tax theory to identify options for reform in the tax-benefit system that can potentially improve the equity-efficiency trade-off. Using a comprehensive applied general equilibrium model, we then explore whether reforms along these lines in the Dutch tax-benefit system raise employment without sacrificing equality. The analysis reveals that selective tax relief for elastic secondary earners and low-skilled workers have this potential. A flat income tax structure, possibly combined with a negative income tax, worsens the equity-efficiency trade-off.Keywords Tax-benefit system · Labour supply · Unemployment · The Netherlands · Applied general equilibrium JEL Classification D31 · D58 · H24 · J22 · J68